﻿/*   
    Copyright (C) 2009 Galaktika Corporation ZAO

    This file is a part of Galaktika.BusinessMonitor
 
    Galaktika.BusinessMonitor is a free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
      
    You should have received a copy of the GNU General Public License
    along with Galaktika.BusinessMonitor.  If not, see <http://www.gnu.org/licenses/>.
  
    If GPL v.3 is not suitable for your products or company,
    Galaktika Corp provides Galaktika.BusinessMonitor under a flexible commercial license
    designed to meet your specific usage and distribution requirements.
    If you have already obtained a commercial license from Galaktika Corp,
    you can use this file under those license terms.
*/

using System;
using System.Collections.Generic;
using System.Linq;

namespace Galaktika.BI.Silverlight.ClientApp.Web.Commands
{
    using Galaktika.BI.Runtime.Services;
    using Galaktika.BI.Silverlight.Services;
    using Galaktika.BI.Runtime;
    using Galaktika.BI.Extensibility.Dom;

    public class ModifyVariablesCommand : Galaktika.BI.Silverlight.Commands.ServerCommand
    {
        public ModifyVariablesCommand(InvokeSchema invoker)
            : base(Galaktika.BI.Silverlight.Commands.CommandId.ModifyVariablesId)
        {
            this.ContextId = invoker[KnownInvokeArgs.ContextId];
            if (this.ContextId == null)
            {
                throw new ArgumentNullException(KnownInvokeArgs.ContextId);
            }

            string nameValues = invoker[KnownInvokeArgs.NameValueCollection];
            if (string.IsNullOrEmpty(nameValues))
            {
                throw new ArgumentNullException(KnownInvokeArgs.NameValueCollection);
            }
            this.NewValues = NameValueDictionary.FromXml(nameValues);
        }

        public string ContextId { get; private set; }
        public NameValueDictionary NewValues { get; private set; }

        public override InvokeResultSchema Invoke()
        {
            InvokeResultSchema res = new InvokeResultSchema(base.Id);
            res.ContentType = KnownContentTypes.Empty;

            DataBinder binder = DataBinder.Current;
            VariablesContainer vars = binder.GetVariables(this.ContextId);
            foreach (NameValueEntry entry in this.NewValues.Entries)
            {
                BrickVariable var = vars[entry.Name];
                if (var == null) continue;

                var.CurrentValue = entry.Value;
            }

            return res;
        }
    }
}
